Reversible driving mechanism



E. BOSSBRT. REVERSIBLE DRIVING MECHANISM.

(No Model.)

Patented Mar 9,

ERNST BOSSERT, OF CINCINNATI, OHIO.

REVERSIBLE DRIVING MECHANISM.

SPECIFICATION forming part of Letters Patent No. 579,559, dated March 30, 1897..

Application filed March 5,1896. Serial No. 581,895. (No model.)

To all whom, it may concern.-

Be it known that I, ERNST BOSSERT, a citizen of the United States, residing at-Oincin nati, Ohio, have invented new and useful Improvements in Reversible Driving Mechanism, of which the following is a specification.

My invention relates to devices for driving machinery with alternate opposite rotation, its object being to produce a simple and efficient mechanism for driving certain classes of machines, such as washing-machines, &c., with a continuous uninterrupted belt motion without the wear and tear of belts and mechanism incident to belt-shifting devices.

To this end my invention consists in a crown gear-disk having an interrupted series of teeth projecting from its face, in co1nbination with an oscillating pulley-frame carryinga counter-shaft provided with a pinion engaging the crown gear-teeth and beltpulley through which power is communicated.

The face of the crown gear-disk is provided with a guid e-groove concentric with the teeth and at opposite sides, in which the end of the counter-shaft engages.

It also consists in the combination, with the oscillating pulley-frame, of an adj ustable pivot-fastening, whereby the oscillating frame may be set in proper relations with the original source of driving power.

Mechanism embodying my invention is shown in the accompanying drawings, exhibiting, in-

Figure 1, a perspective elevation of myinvention as applied to and operating a cylindrical rotary washing-machine. Fig. 2 is a horizontal cross-section of the same; Fig. 3,

a detail face view of the base-plate for holding the adjustable fulcrum-stud of the oscillating pulley-frame. Fig. 4 is a detail of the adjustable fulcrum-pin, showin the mode of attachment to its base-plate. Fig. 5 is a detail of one of the crown gear-pins, showing the friction-sleeve in section. Fig. 6 is a dc.- tail side and corresponding end elevation of a modified construction of driving-gear.

Referring now to the drawings, A designates the cylindrical casing of a washing-machine, and B a crown gearwheel attached to the projecting end of the shaft Ct. The wheel 13 is recessed at its outer face by a concentric groove 17, forming a circle interrupted at one point I), and from the central median line of the groove rises a concentric series of teeth 0, projecting outward parallel with the axis of the wheel and beyond its face. Motion is communicated to the wheel B by means of a pinion 0: and the following mechanism: Below the wheel, upon the outer face of the casing A, is a curved base-plate D, having a slot d opening through the same concentric with the wheel B. I11 a rear enlargement of the slot is carried the head of a bolt d, provided with a flanged sleeve (Z held against the face of the plate D by a nut (1 The sleeve constitutes a pivot for an oscillating yoke-frame E, in which is journaled a counter-shaft e, carrying the pinion w referred to and projecting beyond the same into the recess 1), against whose side walls it is in contact as an inner and outer abutment, limitingits 0scillation. The'end of the counter-shaft is provided with a friction-sleeve e, as indicated in Fig. 1, and also with fast and loose belt-pulleys 1 In operation the stud d is so adjusted that a line from itself to the center of the permanent line-shaft S, provided with pulley s, from which belt-power is derived, will pass tangentially through an outer pin 0 of the series upon the wheel ]3that is to say, in such position that the arc of oscillation of the frame E will be bisected equally by a line drawn between the axes of the stud d and the lineshaft. The pinion rotates the wheel 13 in one direction until the end of the recess 19 is reached, when the last pin at that end of the series becomes a fulcrum by which the pinion oscillates the frame E and brings itself into similar relations at the opposite side of the series of pins, and thus reverses the rotation of the wheel 13. The shifting of the position of the belt-pulleys out of the normal line is so slight as to produce no material effect upon the belt connection.

In the illustration of my invention here shown I exhibit the series of teeth 0 as an interrupted circle, but it will be obvious that the series of teeth may he spirally arranged and overlap to rotate the wheel B more than a revolution before reversing. In such case the rotative speed would gradually diminish in one direction and gradually increase in the other.

The pins are preferably provided with friction-sleeves c, as indicated in Fig. 5.

The modification shown in Fig. 6 involves fixed bearings for the counter-shaft 6, dispensing with the oscillating frame. In lieu of the first-described arrangement an oscillating arm 1% is carried upon the shaft 0, having a projecting stud or wrist-pin n thereon, carrying a second pinion as of double Width meshing With the pinion (E. The pinion 00 engages the teeth 0, and the arm on oscillates in the same manner in relation to the teeth as the oscillating frame E, before described.

I claim as my invention and desire to secure by Letters Patent of the United States 1. In a self-reversing driving-gear, an interrupted crown-gear and a vibrating frame pivoted adjacent thereto in such relations that its arc of oscillation is bisected by a line connecting the axes of its pivot and the line-shaft, (source of power in combination with the counter-shaft carried by the frame perpendicular to the face of the crown-gear, the spur-pinion thereon engaging the crown gearteeth, the belt-pulleys, the line-shaft drivingpulley and the driving-belt, substantially as set forth.

2. In reversible driving mechanism of the character indicated, the crown-gear having an interrupted series of teeth, the oscillating bearing, counter-shaft, and pinion, in combination with the adjustable stud, for support and adjustment of the oscillating arm, substantially as set forth.

3. In a reversible driving mechanism, in combination with the crown-gear, the curved base-plate having a slot concentric with the wheel, the sleeve adjustable thereon, the 0scillating frame, belt-pulleys, and drivingpinion, substantially as set forth.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

ERNST BOSSERT.

Vitnesses:

L. M HosEA, FRANKKY BOWMAN. 

